[chuck-users] pitching samples

[Ollie Glass]

Brilliant, this is exactly what I'm looking for. Thank you Atte.

Ollie

> Ollie Glaskovik wrote:
>
>> I'd like to make a pitched sample playing function which, given a   
>> sample at a known pitch (say C-2) and a MIDI pitch value (0-127),   
>> plays the sample at that pitch. I suppose this could be done with   
>> sndbuf's .rate function and some math but I'm not sure where to   
>> start.
>
> Given you have the midi pitch in the variable "note", the following  
> will work. "transpose" is just a handy way of transposing the  
> instrument, "root" is the known pitch of the sample. Note also that  
> mtof will work with float, so you can have 12.01 => transpose, to  
> transpose an octave + a cent.
>
> 12 => transpose;
> 60 => root;
>
> sndbuf s => dac;
>
> std.mtof(note + transpose)/ std.mtof(root) => s.rate;
>
> -- 
> peace, love & harmony
> Atte
>
> http://www.atte.dk